Hi,
if I'm not mistaken that screen shot is of wxMach.set which was the very first and experimental GUI, it was never intended to be
a useful screen set for normal operations.
If you load wx4.set for instance you will not fine ReverseRun, and to my knowledge there is none.
Reverse Run was always one of the buggiest features of Mach3 and so I believe the Mach4 developers avoided it altogether, not withstanding
its early inclusion in wxMach.set.
Mach4 adheres very closely to ANSI Gcode and as a result if you attempt to reverse run the code the modals are all wrong.
Is there a particular reason you want it?
You could easily write a script that rewrites the Gcode in reverse order......but what happens to the modals?
?
Craig